Architecture decision records

An ADR records one structural decision: the context, what was decided, and what it costs. ADRs are immutable once accepted: to change a decision, write a new ADR that supersedes the old one and update the old one's status.

#	Decision	Status
0001	Strict Electron process isolation, one preload bridge	Accepted
0002	Local storage in a SQLite file through node:sqlite	Accepted
0003	Database location in a pointer file, never moved automatically	Accepted
0004	PDF pages rasterized in the main process with pdf.js + @napi-rs/canvas	Accepted
0005	Book metadata looked up on demand in public APIs, from the main process	Accepted
0006	Bédéthèque album pages read from a pasted link	Accepted
0007	Cover thumbnails in a disk cache, outside the database	Accepted
0008	Interface translations with i18next, locales split by area	Accepted
0009	IPC arguments validated in the main process	Accepted
0010	Schema migrations versioned with PRAGMA user_version	Accepted
0011	A mandatory handle() wrapper for IPC, and opaque tokens instead of paths	Accepted
0012	Comic files decoded in a utility process, not in the main process	Accepted
0013	One renderer data store, kept current by a data:changed push	Accepted
0014	Achievements evaluated in the renderer, only unlocks persisted	Accepted
0015	Library organization: the app moves files into one subfolder per comic	Accepted
0016	Library structure: a tree of up to three metadata levels	Accepted
0017	Library file names: a template of metadata fields	Accepted
0018	Decoder calls bounded by a timeout, archives tied to their window	Accepted
0019	Several users on one library, without passwords	Accepted
0020	Library paths relative to the library folders	Accepted
0021	Metadata lookup dialog: explicit search, more page sources, saved to the .nfo	Accepted
0022	Watched folders per user, and settings split in two groups	Accepted
0023	Cleaning the books by rewriting the CBZ archives	Accepted
0024	Database backups in a .tankobon folder, restored at start-up	Accepted
0025	Converting the CBR of the organized library to CBZ	Accepted
0026	Bédéthèque: finding the album from the series name	Accepted
0027	Cheaper library reloads: deltas and projections before SQL search	Proposed
0028	A second decoder process for background work, the reader keeps its own	Proposed

These first four ADRs were written after the fact, from the code and its comments, then checked by the maintainer.

Writing a new ADR

Copy the template to NNNN-short-title.md (next number), fill it in, add it to the table above, and ship it in the same pull request as the change it describes.